# coding = utf - 8

# 创建并初始化menu_dict字典
menu_dict = {}
while True:
  try:
  food = input()
price = int(input())
menu_dict[food] = price
except:
  break

#请在此添加代码， 实现对menu_dict的添加、 查找、 修改等操作， 并打印输出相应的值
# # # # # # Begin # # # # # #
# m = dict(zip(food, price))
menu_dict["lamb"] = 50
print(menu_dict["fish"])
menu_dict["fish"] = 100
del menu_dict["noodles"]
print(menu_dict)

# # # # # # # End # # # # # # #
